Metric Nut Size Table

Nut Size	Diameter*	Height
		Hex Nut	Jam Nut	Nylock Nut
2	4	1.6	1.2	-
2.5	5	2	1.6	-
3	5.5	2.4	1.8	4
4	7	3.2	2.2	5
5	8	4	2.7	5
6	10	5	3.2	6
7	11	5.5	3.5	-
8	13	6.5	4	8
10	17	8	5	10
12	19	10	6	12
14	22	11	7	14
16	24	13	8	16
18	27	15	9	18.5
20	30	16	10	20
* This is the diameter across the flats. It is also the size of wrench to use.